CZKJ.JUNRUN/init_cms/CZFW.CMS.Admin/Controllers/HomeController.cs

using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;

namespace CZFW.CMS.Admin.Controllers
{
    public class HomeController:Controller
    {
        public IActionResult Index([FromServices]IHostingEnvironment env)
        {
            return PhysicalFile(env.WebRootPath + "/index.html", "text/html");
        }
    }
}